Brochure

Zone Control Systems

NCM-300

The NCM-300 control panel is compatible with single stage systems, two stage

heat systems and heat pump systems. The panel is configured for 2 or 3 zones

and non-expandable. This is ideal for residential new construction allowing a very

competitive product to be sold to the homebuilder. The NCM-300 features auto-

matic changeover and fan control from any zone with a built in computer “watch-

dog circuit” to insure proper operation. The panel is shipped with an SAS sensor

for high and low limit protection control. The SAS has adjustable potentiometers

for the heating and cooling limits for different geographical locations. The NCM-

300 control panel is compatible with any 3 or 4 wire thermostat on any zone and

allows for single stage thermostats to control heat pumps or multi-stage systems

with an adjustable timer. The NCM-300 is also compatible with two-stage heat

pump and dual fuel thermostats.

The opposing system timer insures that no zone will starve for needed conditioned

air, this can also be turned off to allow for maximum run times. The “One Zone”

allows the occupants to flip a switch (VAC) and put the panel into vacation mode.

This mode sets the zoning system based on the program of the zone one thermo-

stat allowing the whole system to be programmed from one location. The LED

bank allows for instant recognition and detection of system status for the installer.

The NCM-300 allows for dual transformer systems (ex. hydro-air, oil burners, hot

water coils etc.) to wire up without the need for additional relays. We have incorpo-

rated an isolation relay on the NCM-300 to allow for easy wiring to these systems.

MODEL ST-2 / ST-3 Rev. E

Model ST series panels are for single stage heating and cooling with manual change-

over. Zone 1 is the “master” zone which controls the heating and cooling mode

and also the fan operation. The ST-2 is a 2 zone panel and the ST-3 is a 3 zone

panel. Zones 2 and 3 will only operate in the same mode that the zone #1 thermo-

stat is in. Each thermostat can turn the system “on” and “off,” but only in the same

mode. It is recommended that zones 2 and 3 have no switching subbases for the

thermostats. The ST panels can be used with mechanical or digital programmable

thermostats that are non-power stealing.

Open-Close switches on the control panels near the damper terminal blocks allow for

continuous air circulation. This switch controls the damper position when the heating

and air conditioning system is at rest. The ST panels can be wired together to create

larger zoning systems up to 5 zones.

Model List Price

ST-2E $198.00

ST-3E 246.00

Model List Price

NCM-300 $286.00

VAC 55.00

RES 55.00

SAS Included